R: Re: PCI device not working

DISCUSSION Davide Viti 1 participant 1 message Sep 28, 2012

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Davide Viti

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2012-09-28 14:49 UTC #0 lore raw

Hi Kumar,

Quoted 2 lines

It was, can you figure out in u-boot what exact config read on=20

the bus would return the correct thing.

Quoted 2 lines

The fact that when we probe the=20

device at 0001:03 we should get back something like cfg_data=3D0xabba1b65

Quoted 1 line

here=20
follow some details about what is going on inside u-boot; verbosity increas= es=20
from [1] to [3]

[1] PCI printouts when the board come up
[2] output of "pci=20
[0-3] long" u-boot command
[3] same as [1] but with debug print inside=20
indirect_read_config_##size() [drivers/pci/pci_indirect.c]

if you were curious=20
about our u-boot board settings, please refer to:
http://www.mail-archive.
com/[email protected]/msg62007.html

thanx alot,
Davide

*************
* [1] *
*************
PCIE1 used as Root Complex (base=20
addr ffe09000)
Scanning PCI bus 01
01 00 1b65 abba =20
0280 00

        cfg_addr:ffe09000  cfg_data:ffe09004  indirect_type:0

=20
PCIE1 on bus 00 - 01

PCIE2 used as Root Complex (base addr ffe0a000)

Scanning PCI bus 03
03 00 1b65 abba 0280 00
=20
cfg_addr:ffe0a000 cfg_data:ffe0a004 indirect_type:0

    PCIE2 on bus 02 - 03

*************
* [2] *
*************

=3D> pci 0 long
Scanning PCI devices=20
on bus 0

Found PCI device 00.00.00:
vendor ID =3D 0x1957
=20
device ID =3D 0x0100
command register =3D 0x0006
=20
status register =3D 0x0010
revision ID =3D 0x11
=20
class code =3D 0x0b (Processor)
sub class code =3D =20
0x20
programming interface =3D 0x00
cache line =3D 0x08

latency time =3D 0x00
header type =3D 0x01
=20
BIST =3D 0x00
base address 0 =3D 0xfff00000
=20
base address 1 =3D 0x00000000
primary bus number =3D 0x00
=20
secondary bus number =3D 0x01
subordinate bus number =3D 0x01
=20
secondary latency timer =3D 0x00
IO base =3D 0x00
IO=20
limit =3D 0x00
secondary status =3D 0x0000
memory=20
base =3D 0xa000
memory limit =3D 0xa000
prefetch=20
memory base =3D 0x1001
prefetch memory limit =3D 0x0001
prefetch=20
memory base upper =3D 0x00000000
prefetch memory limit upper =3D 0x00000000
IO=20
base upper 16 bits =3D 0x0000
IO limit upper 16 bits =3D 0x0000
=20
expansion ROM base address =3D 0x00000000
interrupt line =3D 0x00
=20
interrupt pin =3D 0x00
bridge control =3D 0x0000

=3D>=20
pci 1 long
Scanning PCI devices on bus 1

Found PCI device 01.00.00:kk
vendor=20
ID =3D 0x1b65
device ID =3D 0xabba
command=20
register =3D 0x0006
status register =3D 0x0010
revision=20
ID =3D 0x01
class code =3D 0x02 (Network=20
controller)
sub class code =3D 0x80
programming interface=20
=3D 0x00
cache line =3D 0x08
latency time=20
=3D 0x00
header type =3D 0x00
BIST=20
=3D 0x00
base address 0 =3D 0xa0000000
base=20
address 1 =3D 0xa0010000
base address 2 =3D 0x00000000

base address 3 =3D 0x00000000
base address 4 =3D =20
0x00000000
base address 5 =3D 0x00000000
cardBus CIS pointer=20
=3D 0x00000000
sub system vendor ID =3D 0x0000
sub system ID=20
=3D 0x0000
expansion ROM base address =3D 0x00000000
interrupt=20
line =3D 0x00
interrupt pin =3D 0x01
min Grant=20
=3D 0x00
max Latency =3D 0x00

=3D> pci 2 long

Scanning PCI devices on bus 2

Found PCI device 02.00.00:
vendor ID=20
=3D 0x1957
device ID =3D 0x0100
command=20
register =3D 0x0006
status register =3D 0x0010
revision=20
ID =3D 0x11
class code =3D 0x0b (Processor)
=20
sub class code =3D 0x20
programming interface =3D 0x00
cache=20
line =3D 0x08
latency time =3D 0x00
header type=20
=3D 0x01
BIST =3D 0x00
base address 0=20
=3D 0xfff00000
base address 1 =3D 0x00000000
primary=20
bus number =3D 0x00
secondary bus number =3D 0x01
subordinate=20
bus number =3D 0x01
secondary latency timer =3D 0x00
IO base=20
=3D 0x00
IO limit =3D 0x00
secondary=20
status =3D 0x0000
memory base =3D 0xb000
memory=20
limit =3D 0xb000
prefetch memory base =3D 0x1001
prefetch=20
memory limit =3D 0x0001
prefetch memory base upper =3D 0x00000000
=20
prefetch memory limit upper =3D 0x00000000
IO base upper 16 bits =3D 0x0000

IO limit upper 16 bits =3D 0x0000
expansion ROM base address =3D =20
0x00000000
interrupt line =3D 0x00
interrupt pin =3D =20
0x00
bridge control =3D 0x0000

=3D> pci 3 long
Scanning PCI devices=20
on bus 3

Found PCI device 03.00.00:
vendor ID =3D 0x1b65
=20
device ID =3D 0xabba
command register =3D 0x0006
=20
status register =3D 0x0010
revision ID =3D 0x01
=20
class code =3D 0x02 (Network controller)
sub class code=20
=3D 0x80
programming interface =3D 0x00
cache line=20
=3D 0x08
latency time =3D 0x00
header type=20
=3D 0x00
BIST =3D 0x00
base address 0=20
=3D 0xb0000000
base address 1 =3D 0xb0010000
base=20
address 2 =3D 0x00000000
base address 3 =3D 0x00000000

base address 4 =3D 0x00000000
base address 5 =3D =20
0x00000000
cardBus CIS pointer =3D 0x00000000
sub system vendor ID=20
=3D 0x0000
sub system ID =3D 0x0000
expansion ROM base=20
address =3D 0x00000000
interrupt line =3D 0x00
interrupt pin=20
=3D 0x01
min Grant =3D 0x00
max Latency=20
=3D 0x00

*************
* [3] *
*************

    PCIE1=20

used as Root Complex (base addr ffe09000)
b=3D0 d=3D0 f=3D0 (fbusno=3D0 itype=3D0=20 cfg_adr=3Dffe09000 cfg_data=3Dffe09004) ofs=3D10 mask=3D0
...

               Scanning=20

PCI bus 01
b=3D1 d=3D0 f=3D0 (fbusno=3D0 itype=3D0 cfg_adr=3Dffe09000 cfg_data=3Dffe09= 004)=20
ofs=3De mask=3D3
...
b=3D1 d=3D0 f=3D0 (fbusno=3D0 itype=3D0 cfg_adr=3Dffe09000=20 cfg_data=3Dffe09004) ofs=3D3c mask=3D3

        01  00  1b65  abba  0280  00

b=3D1 d=3D1=20
f=3D0 (fbusno=3D0 itype=3D0 cfg_adr=3Dffe09000 cfg_data=3Dffe09004) ofs=3De=
mask=3D3
b=3D1 d=3D1=20
f=3D0 (fbusno=3D0 itype=3D0 cfg_adr=3Dffe09000 cfg_data=3Dffe09004) ofs=3D0=
mask=3D2
...
b=3D0=20
d=3D0 f=3D0 (fbusno=3D0 itype=3D0 cfg_adr=3Dffe09000 cfg_data=3Dffe09004) o= fs=3D9 mask=3D3
=20
PCIE1 on bus 00 - 01

PCIE2 used as Root Complex (base addr ffe0a000)
b=3D0=20
d=3D0 f=3D0 (fbusno=3D2 itype=3D0 cfg_adr=3Dffe0a000 cfg_data=3Dffe0a004) o= fs=3D10 mask=3D0
b=3D0=20
d=3D0 f=3D0 (fbusno=3D2 itype=3D0 cfg_adr=3Dffe0a000 cfg_data=3Dffe0a004) o= fs=3D10 mask=3D0
...

b=3D0 d=3D0 f=3D0 (fbusno=3D2 itype=3D0 cfg_adr=3Dffe0a000 cfg_data=3Dffe0a=
004) ofs=3D9 mask=3D3

Scanning PCI bus 03
b=3D1 d=3D0 f=3D0 (fbusno=3D2 itype=3D0=20 cfg_adr=3Dffe0a000 cfg_data=3Dffe0a004) ofs=3De mask=3D3 b=3D1 d=3D0 f=3D0 (fbusno=3D2 itype=3D0=20 cfg_adr=3Dffe0a000 cfg_data=3Dffe0a004) ofs=3D0 mask=3D2
...
b=3D1 d=3D0 f=3D0 (fbusno=3D2=20
itype=3D0 cfg_adr=3Dffe0a000 cfg_data=3Dffe0a004) ofs=3D3c mask=3D3

        03  00  1b65 =20
abba  0280  00
        cfg_addr:ffe0a000  cfg_data:ffe0a004  indirect_type:0

b=3D1 d=3D1 f=3D0 (fbusno=3D2 itype=3D0 cfg_adr=3Dffe0a000 cfg_data=3Dffe0a=
004) ofs=3De mask=3D3

...
b=3D0 d=3D0 f=3D0 (fbusno=3D2 itype=3D0 cfg_adr=3Dffe0a000 cfg_data=3Dffe0a=
004) ofs=3D9=20
mask=3D3

    PCIE2 on bus 02 - 03

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